A ransomware attack that hit the South African electric utility City Power from Johannesburg this morning encrypted all its systems, including databases and applications.
The incident affects one of the largest power suppliers in Johannesburg, owned by the city municipality. At the same time, customers reported multiple power outages on Twitter but it has not been confirmed if they are related.
The attack used an unknown ransomware strain and it blocked some clients from buying electricity units using its prepaid electricity vending system according to the company.
